package com.yh.construct.appearance_parttern.demo1;

/**
 * @program: design-patterns
 * @description: ${description}
 * @author: yangh0597@163.com
 * @date: 2021-03-13 15:34
 * @problem:
 **/
public class Obs {
    public String uploadFIle() {
        return "";
    }


}
